package com.sang.handler;

import com.baomidou.mybatisplus.core.injector.ISqlInjector;
import com.baomidou.mybatisplus.extension.injector.LogicSqlInjector;
import com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.PerformanceInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.transaction.annotation.EnableTransactionManagement;

//扫描我们的mapper文件夹
@MapperScan("com.sang.mapper")
@EnableTransactionManagement    //开启事务管理
@Configuration  //配置类
public class MybatisPlusConfig {

    //注册乐观锁插件
    @Bean
    public OptimisticLockerInterceptor optimisticLockerInterceptor() {
        return new OptimisticLockerInterceptor();
    }

    //分页插件
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        //设置请求的页面大于最大页后操作，true调回首页，false继续请求 默认false
        //paginationInterceptor.setOverflow(false);
        //设置最大单页限制数量，默认500条  ，-1 不受限制
        //paginationInterceptor.setLimit(500);
        //开启count的join优化，只针对部分left join
        //paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return paginationInterceptor;
    }

    //逻辑删除组件！
    @Bean
    public ISqlInjector sqlInjector() {
        return new LogicSqlInjector();
    }

    //性能分析插件
    @Bean
    @Profile({"dev","test"}) //设置dev 和 test环境开启 保证我们的效率
    public PerformanceInterceptor performanceInterceptor(){
        PerformanceInterceptor performanceInterceptor = new PerformanceInterceptor();
        //在工作中，不允许用户等待，会影响体验，通过这样去过滤慢sql
        performanceInterceptor.setMaxTime(100);//ms  设置sql执行的最大时间，如果超过则不执行
        performanceInterceptor.setFormat(true);//   是否格式化代码
        return performanceInterceptor;
    }

}
